<html>
<head></head>
{% block title %}
    <title>这是母版页</title>
{% endblock %}

<body>
<table border="1" style="width: 700px;">
    <tr>
        <td colspan="2">{% include '3\top.html' %}</td>
    </tr>
    <tr style="vertical-align:middle;height:300px;">
        <td style="width:200px;">这是左边的菜单</td>
        <td style="width: 500px;">
            {% block content %}
                这个区域随着不同的内容页的变化而变化
            {% endblock %}
        </td>
    </tr>
    <tr>
        <td colspan="2" style="height:30px;text-align: center;">{% include '3\footer.html' %}</td>
    </tr>
</table>
</body>
</html>